To unlock extras such as ring girls, bonus trucks, special punches, new entrance music, and more, simply
complete in the Career mode and win fights.

Hint Uppercut Without Total Control:

To perform an uppercut with Total Control Punching disabled, press Jab + Hook together.

Hint Wake Up From Knock Downs:

To stand up after getting knocked down--not knocked out--use the Left and Right Analog Sticks to match up the three blurry images of the ref. Find a focal point, such as the EA logo on the ref's shirt, and move the two images to match the one that stays still.